AMD Steam Machine GPU vs NVIDIA RTX 4500 Ada Generation Comparison

The Verdict

The data in this comparison is unusually one-sided. The NVIDIA RTX 4500 Ada Generation holds every recorded advantage over the AMD Steam Machine GPU. The RTX 4500 sits at the 97th percentile among all GPUs in the database, while the AMD part lands at the 50th percentile. That gap alone indicates two entirely different performance tiers.

The AMD Steam Machine GPU is a compact console-oriented part with 8 GB of memory and a 110 W power envelope. It targets a specific use case: integrated gaming hardware where space and power draw are constrained. The RTX 4500 Ada Generation is a workstation card with 24 GB of memory, a 210 W power draw, and a 550 W suggested power supply. The RTX 4500 delivers more than double the FP32 throughput, nearly triple the texture rate, and a higher pixel rate. For any workload that scales with raw compute, memory capacity, or bandwidth, the RTX 4500 is the clear choice based on the recorded specifications.

However, the AMD part is not without purpose. Its 6 nm process node, smaller die size, and lower transistor count suggest a design focused on efficiency within a fixed thermal budget. The RTX 4500 uses more than three times the transistors and a larger die, which explains its higher performance but also its higher power requirement. The AMD GPU has no power connectors listed, while the RTX 4500 also lists no power connectors but does require a 550 W suggested PSU. The AMD card's dimensions are nearly square (156 mm by 152 mm by 162 mm), whereas the RTX 4500 is a longer dual-slot card at 245 mm. The form factor difference is substantial.

Where Each One Wins

The AMD Steam Machine GPU wins in the portability and integration domain. Its dimensions are compact, its power draw is listed at 110 W, and it requires no external power connectors. This makes it suitable for small-form-factor consoles or embedded systems. The display outputs include one HDMI 2.1a and one DisplayPort 2.1, which covers modern consumer displays. The 8 GB GDDR6 memory on a 128-bit bus delivers 288.0 GB/s of bandwidth, adequate for 1080p-class gaming at moderate settings.

The NVIDIA RTX 4500 Ada Generation wins in every compute and professional workload category. Its 24 GB GDDR6 memory on a 192-bit bus provides 432.0 GB/s of bandwidth, a 50% increase over the AMD part. The FP32 throughput of 39.63 TFLOPS more than doubles the AMD's 17.56 TFLOPS. The RTX 4500 has 7680 shading units versus 1792, 240 texture mapping units versus 112, and 80 render output units versus 64. It also includes 240 tensor cores and 60 RT cores, while the AMD part lists 28 RT cores and no tensor cores. For ray tracing, AI inference, and compute-heavy rendering, the RTX 4500 dominates.

The benchmark data confirms this split. The RTX 4500 scores 160786 in Geekbench OpenCL and 171401 in Geekbench Vulkan, with an average benchmark score of 166094. The AMD Steam Machine GPU has no recorded benchmark scores in the database. The RTX 4500's nearest rivals include the NVIDIA RTX A5500 (0.5% lower), the AMD Radeon PRO W7800 (0.7% lower), and the NVIDIA A100 PCIe 40 GB (2.2% lower). Only the AMD Radeon Pro W6900X scores higher, at 1.5% above the RTX 4500. This places the RTX 4500 in a tight competitive cluster near the top of the workstation segment.

Architecture Differences

The two GPUs come from different architectural lineages. The AMD Steam Machine GPU uses the Navi 33 chip built on RDNA 3.0 architecture, with the codename "Hotpink Bonefish." It is fabricated on a 6 nm process at TSMC with 13,300 million transistors on a 204 mm² die. The transistor density is 65.2 million per mm². This is a modern, dense design that prioritizes efficiency per watt.

The NVIDIA RTX 4500 Ada Generation uses the AD103 chip built on Ada Lovelace architecture. It is fabricated on a 5 nm process at TSMC with 45,900 million transistors on a 379 mm² die. The transistor density is 121.1 million per mm², nearly double that of the AMD part. This density difference reflects NVIDIA's more complex compute architecture, which includes dedicated tensor cores for AI workloads and a higher count of RT cores.

The RDNA 3.0 architecture uses a unified shader design where FP32 and FP16 throughput are identical at 17.56 TFLOPS (1:1 ratio). The Ada Lovelace architecture also lists FP32 and FP16 at the same rate of 39.63 TFLOPS (1:1). Both support DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4, so API compatibility is identical.

Clock speeds differ notably. The AMD GPU has a base clock of 1720 MHz, a game clock of 2250 MHz, and a boost clock of 2450 MHz. The NVIDIA GPU has a base clock of 2070 MHz and a boost clock of 2580 MHz, with no game clock listed. The NVIDIA part runs at higher frequencies, which contributes to its compute advantage despite the larger die.

Memory configuration also differs. Both use GDDR6, and both list a memory clock of 2250 MHz with 18 Gbps effective. However, the AMD part uses a 128-bit bus for 288.0 GB/s, while the NVIDIA part uses a 192-bit bus for 432.0 GB/s. The NVIDIA card also has three times the memory capacity at 24 GB versus 8 GB. This makes the RTX 4500 far more suitable for large datasets, high-resolution textures, and multi-application workflows.

FAQ

Q: Which GPU has higher raw compute performance?

A: The NVIDIA RTX 4500 Ada Generation delivers 39.63 TFLOPS of FP32 throughput, more than double the AMD Steam Machine GPU's 17.56 TFLOPS. The RTX 4500 also achieves a higher pixel rate of 206.4 GPixel/s versus 156.8 GPixel/s, and a texture rate of 619.2 GTexel/s versus 274.4 GTexel/s.

Q: How do the memory capacities compare?

A: The NVIDIA RTX 4500 has 24 GB of GDDR6 memory on a 192-bit bus, providing 432.0 GB/s of bandwidth. The AMD Steam Machine GPU has 8 GB of GDDR6 memory on a 128-bit bus, providing 288.0 GB/s of bandwidth. The NVIDIA part offers triple the capacity and 50% more bandwidth.

Q: What is the power requirement difference?

A: The AMD Steam Machine GPU is rated at 110 W with no power connectors and no suggested PSU listed. The NVIDIA RTX 4500 Ada Generation is rated at 210 W, also lists no power connectors, but specifies a 550 W suggested power supply. The NVIDIA card is a dual-slot design, while the AMD card's slot width is not listed.

Q: Which GPU has better benchmark scores?

A: The NVIDIA RTX 4500 Ada Generation has recorded benchmark scores of 160786 in Geekbench OpenCL and 171401 in Geekbench Vulkan, with an average of 166094. The AMD Steam Machine GPU has no benchmark scores recorded in the database, and its average benchmark score is 0.

Q: How does the RTX 4500 compare to its nearest rivals?

A: The RTX 4500's average benchmark score of 166094 is 0.5% higher than the NVIDIA RTX A5500 (165217), 0.7% higher than the AMD Radeon PRO W7800 (164894), and 2.2% higher than the NVIDIA A100 PCIe 40 GB (162504). The AMD Radeon Pro W6900X scores 1.5% higher at 168574.

Q: What are the physical size differences?

A: The AMD Steam Machine GPU measures 156 mm in length, 152 mm in height, and 162 mm in width. The NVIDIA RTX 4500 Ada Generation measures 245 mm in length and 112 mm in height, with no width listed. The NVIDIA card is substantially longer, while the AMD card has a more compact, squarer footprint.

Head-to-Head Benchmarks

The database records no direct head-to-head benchmark results between these two GPUs. The wins counter shows 0 for each side. However, the specification comparison provides a clear quantitative picture, and the RTX 4500's recorded benchmarks place it firmly in the high-performance tier.

The RTX 4500's Geekbench OpenCL score of 160786 and Vulkan score of 171401 indicate strong compute performance across both APIs. Its average benchmark score of 166094 places it at the 97th percentile of all GPUs. The nearest rival data shows a tight cluster: the RTX A5500 trails by 0.5%, the Radeon PRO W7800 by 0.7%, and the A100 PCIe 40 GB by 2.2%. Only the Radeon Pro W6900X exceeds the RTX 4500, and only by 1.5%. This suggests the RTX 4500 sits at the upper edge of its performance class, with no single rival holding a commanding lead.

The AMD Steam Machine GPU has no benchmark entries, so its real-world performance cannot be quantified from the database. Its 50th percentile ranking among all GPUs is based on its specification profile, not measured results. The FP32 throughput of 17.56 TFLOPS is roughly 44% of the RTX 4500's 39.63 TFLOPS. The texture rate of 274.4 GTexel/s is about 44% of the RTX 4500's 619.2 GTexel/s. The pixel rate of 156.8 GPixel/s is about 76% of the RTX 4500's 206.4 GPixel/s, which is the closest relative gap between the two.

Memory bandwidth shows a 50% advantage for the NVIDIA part: 432.0 GB/s versus 288.0 GB/s. The shading unit count difference is dramatic: 7680 versus 1792, a 4.3x ratio. The RT core count is 60 versus 28, and the NVIDIA part has 240 tensor cores while the AMD part lists none. These architectural gaps translate directly to workload suitability. The RTX 4500 is built for compute density, while the AMD GPU is built for balanced console gaming within a low power envelope.

Specification Differences

The two GPUs differ in nearly every measurable specification category. Here are the fields where they diverge:

• Chip and architecture: AMD uses Navi 33 on RDNA 3.0 with codename Hotpink Bonefish. NVIDIA uses AD103 on Ada Lovelace.
• Process node: AMD uses 6 nm at TSMC. NVIDIA uses 5 nm at TSMC.
• Transistors: AMD has 13,300 million. NVIDIA has 45,900 million.
• Die size: AMD is 204 mm². NVIDIA is 379 mm².
• Transistor density: AMD is 65.2 million per mm². NVIDIA is 121.1 million per mm².
• Base clock: AMD is 1720 MHz. NVIDIA is 2070 MHz.
• Boost clock: AMD is 2450 MHz. NVIDIA is 2580 MHz.
• Game clock: AMD lists 2250 MHz. NVIDIA lists none.
• Memory size: AMD has 8 GB. NVIDIA has 24 GB.
• Memory bus width: AMD is 128 bit. NVIDIA is 192 bit.
• Memory bandwidth: AMD is 288.0 GB/s. NVIDIA is 432.0 GB/s.
• Shading units: AMD has 1792. NVIDIA has 7680.
• Texture mapping units: AMD has 112. NVIDIA has 240.
• Render output units: AMD has 64. NVIDIA has 80.
• RT cores: AMD has 28. NVIDIA has 60.
• Tensor cores: AMD lists none. NVIDIA has 240.
• Pixel rate: AMD is 156.8 GPixel/s. NVIDIA is 206.4 GPixel/s.
• Texture rate: AMD is 274.4 GTexel/s. NVIDIA is 619.2 GTexel/s.
• FP32 throughput: AMD is 17.56 TFLOPS. NVIDIA is 39.63 TFLOPS.
• FP16 throughput: AMD is 17.56 TFLOPS (1:1). NVIDIA is 39.63 TFLOPS (1:1).
• TDP: AMD is 110 W. NVIDIA is 210 W.
• Slot width: AMD lists none. NVIDIA is dual-slot.
• Suggested PSU: AMD lists none. NVIDIA lists 550 W.
• Bus interface: AMD lists none. NVIDIA is PCIe 4.0 x16.
• Display outputs: AMD has 1x HDMI 2.1a and 1x DisplayPort 2.1. NVIDIA has 4x DisplayPort 1.4a.
• Dimensions: AMD is 156 mm by 152 mm by 162 mm. NVIDIA is 245 mm by 112 mm, with width not listed.
• Release date: AMD is June 28, 2026. NVIDIA is August 8, 2023.
• Predecessor and successor: AMD lists none. NVIDIA lists Workstation Ampere as predecessor and Blackwell PRO W as successor.
• Benchmark scores: AMD has none recorded. NVIDIA has Geekbench OpenCL 160786 and Geekbench Vulkan 171401.
• Percentile: AMD is at the 50th percentile. NVIDIA is at the 97th percentile.

The two GPUs share identical API support: DirectX 12 Ultimate (12_2), OpenGL 4.6, and Vulkan 1.4. Both use GDDR6 memory with 2250 MHz clock and 18 Gbps effective speed. Both list no power connectors. Both have active production status. The manufacturing foundry is TSMC for both. Neither has a launch MSRP in the database.

The specification sheet tells a consistent story. The NVIDIA RTX 4500 Ada Generation is a high-density, high-throughput workstation processor with massive memory capacity and a robust feature set. The AMD Steam Machine GPU is a compact, low-power console chip optimized for efficiency and small-form-factor integration. The data does not place them in direct competition; it places them in different product categories with different design goals.